17. a) រូរភាព
Format, ប្រភេទ, ទំហំ
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រូបភាពជាម្ងធ្ាបាយែ៏មានឥទធិពលក្នុ្ការទំនាក្់ទំន្ការងាររបស់អ្នក្។ វាផ្តល់ឱ្យអ្នក្អាននូវការ
យល់ែឹ្តាម្វិចារេញាេងៅងលើក្ិចចការរបស់អ្នក្ ជួយពួក្ងរឱ្យយល់អ្ំពីងោលរំនិត ក្ំេត់ភាព
ពាក្់ព័នធនិ្បង្កើតវាង ើ្ក្នុ្ការច្ចាំរបស់ងរ។
From: Du et al., 2022 in Journal of Applied Physics 131, 170901 (2022)
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18. Format
• EPS (Encapsulated PostScript) ជារូបភាពងគ្កាម្
ទំរ្់វុិចទ័រ។ អាចងគ្បើជាម្ួយ charts, graphs, technical
drawings, annotated images.
• AdobeAcrobat PDF format (PDF) ជារូប
ភាពដែលងរងគ្បើងគ្ចើនសគ្មាប់ការងបាោះពុម្ព
• TIFF (Tagged Image File Format) ជាទំរ្់
ដែលដេនាំឱ្យងគ្បើសគ្មាប់រូបគ្បងភទ bitmap (line art),
grayscale និ្ color halftone images ដែលងគ្បើទំរ្់
pixel
• JPEG រូបភាពដែលអាចទទួលយក្បានទាំ្
grayscale និ្color halftone images (photographs,
micrographs, etc.).
• Microsoft Office files (Word, Excel and
PowerPoint)
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ឯក្សាររូបភាពរួររក្្ាទុក្ជាទំរ្់ែូចខា្ងគ្កាម្៖
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19. Format
Font ដែលងគ្បើក្នុ្រូបភាពគ្តូវដតជាគ្បងភព "TrueType“ (vector based), ឧទាែរេ៍៖
• Arial (or Helvetica)
• Courier
• Symbol (Symbol)
• Times (or Times New Roman)
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ចំណាំ៖ Prescribed font is Times New Roman, 10 points, with an 11 pts line spacing
(1.1 multiple lines), 1 column
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21. ប្រភេទរូរភាព
• Line art - EPS (vector based)
• Line art - TIFF (bitmap)
• Grayscale images in TIFF/JPEG format
• RGB images in TIFF/JPEG format
• Combination art - TIFF/JPEG format
• Combination art - EPS format
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22. ប្រភេទរូរភាព
Line art - EPS (vector based):
• Example: graphs, bar charts, chemical formulae, and plots (pure vector images, and
resolution independent).
• Complementary type :
– images as an array of pixels, like photographs
– Hybrid vector images are annotated bitmap created in MS office
• Line weights range from 0.10 pt to 1.5 pt (recommend: 0.25 pt)
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23. ប្រភេទរូរភាព
Line art - TIFF (bitmap):
• Example: graphs and charts.
• line art images is purely black and white, not grayscale.
• Images should be tightly cropped
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4.3
2.5
3.5
4.5
2.4
4.4
1.8
2.8
2 2
3
5
Category 1 Category 2 Category 3 Category 4
Chart Title
Series 1 Series 2 Series 3
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24. ប្រភេទរូរភាព
Grayscale images in TIFF/JPEG format:
• Example: is generally used for halftones.
• sometimes referred to as an eight-bit image.
• There are 256 levels of gray in a halftone.
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25. ប្រភេទរូរភាព
RGB images in TIFF/JPEG format:
• RGB images are made of three-color
channels (Red, Green, Blue).
• sometimes referred to as an 24-bit image
(8 bits x 3 channels = 24 bits of data for each pixel).
• possible color 2563 = 16.77 million
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26. ប្រភេទរូរភាព
Combination art - TIFF/JPEG format
• a combination of both a halftone (gray or/and color) and line art
elements.
• tonal areas: RGB mode for color, halftone image: grayscale
• Save image in TIFF format or as JPEG maximum quality
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27. ប្រភេទរូរភាព
Combination art - EPS format
• is hybrid vector images that are vector-based images also contain
images, such as photographs, or line art images.
• When color is involved, it should be encoded as RGB
• Line weights range from 0.1 to 1.5 pt.
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28. • Pixels = Resolution
(DPI) × Print size (in
inches);
• 300 DPI for halftone
images;
• 500 DPI for
combination art;
• 1000 DPI for line art.
• 72 Points in one inch.
TARGET SIZE
Image
width
Pixels at
300 dpi
Pixels at
500 dpi
Pixels at
1000 dpi
Minimal size
30 mm
(85 pt)
354 591 1181
Single column
90 mm
(255 pt)
1063 1772 3543
1.5 column
140 mm
(397 pt)
1654 2756 5512
Double
column (full
width)
190 mm
(539 pt)
2244 3740 7480
ទំហំ
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